Coroner Grant Davies reportedly said that police "have deemed" Roche's death "as non-suspicious and there was no third-party involvement"

The cause of death for Prince William and Prince Harry ’s cousin Rosie Roche has been reportedly revealed. Roche was killed by a “traumatic head injury,” according to the Daily Mail, The Independent and other outlets, which cite the Wiltshire and Swindon coroner. She was 20 years old.

Rosie Roche was discovered at her family home by her mother and sister and police are treating her death as not suspicious.